The large majority of households will be fed with a domestic water supply which is defined as “hard water”. This is just a definition which is applied to signify water which has a fairly high concentration of minerals in it. Magnesium and calcium are the two most important minerals. According to the World Health Organisation, there are no health problems associated with hard water supplies - but it can affect the effective operation and lifespan of a variety of different domestic appliances.
Mineral deposits can build up in water pipes, heating systems and in domestic appliances. Appliances which use hot water - kettles, steam irons, dishwashers and washing machines are especially susceptible to this. This is due to the fact that heating the water liberates many of the minerals which then reform as “scale”. As well as domestic appliances, the central heating system may be affected.
There are a number of different variables which influence how much scale is generated. The temperature of the water is one of the strongest influencing factors on this process. More scale is produced at higher temperatures. Running dishwashers and washing machines at a lower temperature setting will reduce the amount of scale produced and help to ensure that these appliances continue to operate efficiently and have an extended working life. Using soaps and detergents which have an anti-scaling agent included will also help.
Of course, some appliances such as kettles and irons need to be used at high temperature. Some kettles are available with filters these days, which can prevent some of the minerals getting into the sensitive heating elements. Many irons now come with special anti-scaling traps which collect the scale deposits and allow it to be cleaned by simply flushing it under running water. Other alternatives include cleaning or flushing through using special anti-scale chemicals.
There may be no health problems as a result of a hard water supply, but some people will dislike the flavour of hot drinks and food prepared using this. In this case, a water filter could be used. Various types exist, ranging from simple jug type filters to on tap, under sink and even whole house filters. They are all effective, cheaper than you might imagine and relatively quick to install.
It may seem like an inconvenience, but it’s well worth the effort to counter the effects of a hard water supply. In addition to the improved operational efficiency of your domestic appliances, use of the correct detergents and the selection of a lower operating temperature, combined with scale removal from time to time, will save you money by extending the life of your appliances.
Check out our Tefal steam generator iron buyer’s guide and learn how you can snap up a bargain and reduce the amount of time you spend ironing.